Revolving car seat



Fab., M, y.'

E. J. BECK m AL.

REVOLVING CAR SEAT Filed Jan. 8, 1931 5 Sheets-Sheet l Feb. 1 1, 1936.

E, J. BECK El' AL.

REVOLVING CAI-` SEAT Filed Jan. 8, 1931 3 VSheets-Sheet 2 Nw@ N N 2 fen'50715.'

r ,a MJ .man a ce m Sp... www mi e le fr j Feb. 11, 1936. E. J. BECK ErAl.

REVOLVING CAR SEAT Filed Jan. 8, 1931 s sheets-sheet 3 Patented Feb. 11,1936 UNITED STATES PATENT orties Michigan City, Ind.,

and King Karpen, Chicago, Ill., assignors to S. Karpen & Bros., acorperation of West Virginia Application January 8,

' 9 Claims.

This invention relates particularly to a seat adapted for use inrailroad coaches and buses, although the invention may be usefullyemployed elsewhere.

The primary object is to provide an improved seat which can be reversedin direction and which, in the operation of reversing the seat, will belaterally shifted. Another object is to provide a seat constructionwhich permits ready rotation of the seat while at the same timepreventing chatterinCr or rocking of the seat upon its pivotalconnections with the base members. An additional object is to provideimproved means for locking the seat-structure upon its base.

The invention is illustrated in a preferred embodiment in theaccompanying drawings in which- Figure 1 is a broken rear view of acar-seat constructed in accordance with my invention; Fig. 2 is a sideView in elevation; Fig. 3 is a part sectional view, the section beingtaken as indicated at line 3 of Fig. 2; Fig. i is a part sectional view,the section being taken as indicated at line 4 of Fig. 1; Fig. 5 is aplan view, the seat-structure having been removed, and the View beingindicated at line 5 of Fig. l; Fig. 6 is a sectional detail view, thesection being taken as indicated at line 6 of Fig. 5; and Fig. 7 is asectional detail view, the section being taken as indicated at line 1 ofFig. 5.

In the preferred construction shown in the drawings, A designates a baseframe which is supported upon standards A; B designates a carriage orsliding block which is mounted upon the frame A; and C designates a seatplate which is secured to the seat structure D and which is pivotallyconnected to the carriage or sliding blo'ck B; and D designates a seatresting upon seat-plate C.

The base A preferably comprises the end beams I which rest upon thestandards A and the longitudinal beams 2 which are connected to the endbeams I to form a rectangular frame. A cross piece 3 connects the sidebeams 2 at an intermediate point; and a middle beam 4, between the sidebeams 2, extends from one end of the beam I to the cross beam 3. Asshown more clearly in Fig. 4, the side beams 2 may be formed in theshape of angle irons soas to provide vertical flanges or sides 5.Secured to the inner edges of the side beams 2 are the retaining strips5 which are provided with outwardly turned flanges 'I spaced a shortdistance above the beam 2. Secured to the outer sides of the side beams2, as shown more clearly in Fig. 5 are bracket walls 8 and at anintermediate point within the bracket 1931, Serial No. 507,470

walls 8 are bracket supports 9. is secured to the middle beam t blyprovided with a roller Si.

The carriage or sliding block B is preferably rectangular in shape andis provided along its underside with a depending edge or ange portioni2. As shown more clearly in Fig. 4, a strip t@ is secured to the flangeportion I2 of the block B and extends under the overhanging lip "s ofthe retaining strip S. By this means, the carriage or block B isslidably secured to the base frame.

As shown more clearly in Figs. 3, 4 and 5, the carriage or block B isprovided with a large circular opening and a flange ring ill at the edgeof the opening. Integrally formed with the upper portion of the flangeI-I is an inwardly eX- tending flange lip I5.

The seat plate C, as shown more clearly in Figs. 3, 4 and 5, comprisesan annular flange portion I6 adapted to rest upon the flange i4 and lipI5 and attached to engage the front face of flange lip I5; lateral armsIl by which the plate C may be secured to the seat-structure D; andinverted cam casing within the annular flange portion i6. The cam casingI8 is preferably formed as illustrated in Fig. 5, in the shape of twocircles which merge at their point of meeting on one side. The casand ispreferaing i3 isl recessed on its underside to form a continuous camtrack l which resembles the figure 8. The cam track I9 is ladapted toreceive the cam stud roller I i which is secured to the middle beam 4 ofthe base. The inner portions of the cam casing I8 are braced by the webportions 26.

in a casing member 25 which is secured to the J.

annular flange portion I of plate C. A spring 26, as shown more clearlyin Fig. 6 is adapted to urge the plunger in a downward direction. Aportion of the annular flange lip i5 ci the block or carriage B is cutaway at 2l, on opposite sides of the f block, to receive the plunger2li. The semiircularrecess 2l is shown in Figs. 5 and 6. To accommodatethe plunger 2d a similar semicircular portion 28 is struck from theannular flange portion I6 of the plate C. Rigidly se- I8 which is formedv- The inset plugs 2l may be removably 11.1

A cam stud I0 t n and side wall l2.

Y Vc5 In order to actuate the pivoted lever 3|, a bar 32 is located ineach of the compartments formed by the Ybracket walls 8 and the sidewalls 5 and is adapted to raise the outer end of lever 3|. Each of thebars 32 is rigidly connected to a shaft 33 which is rotatablyrmounted inthe wall 5 of the base frame. As shown more clearly in Figs. 5

Yand 7, the treadle member 34 -equipped with a bar 35 which is rigidlyconnected to the shaft 33, is used to rotate the shaft. Bar 35is'normally held in raised position by means of a spring 36 whichengages a rear extension 31 of bar 315.

In assembling the plate VC with the carriage or sliding block B, theannular flange portion I6 of the seat-plate C is brought into alinementwith the annular flange |4 of block B so that the top portion of flangei6 rests upon the flange |4 and the lower portion of flange I6 bearsagainst the front face of the flange lip l5. As shown more clearly inFigs. 3 and 4, a ring track 38 is secured Vjust below the flange lip I5and ball-bearings 39 are secured between the ring 38 and an annularplate 49. The annular plate 4|! is secured by means'of bolts 4| to theVplate C. If desired, a ring 42 maybe interposed between the plate 49 andthe seat-plate C. With this arrangement, the plate C and block B may besecured tightly together while the Vball bearings 39 interposedtherebetween diminish the friction which would otherwise be present. l

The operation may be stated briefly:

When it is desired to rotate the seat-structure D, the pedal member 34may be depressed, thereby rotating a shaft 33 and raising Vthe bars 32.One of the bars 32 engages the free end of the pivoted lever 3| andraises it together with the rigid pin 29 which is secured to the plunger24. In this way the plunger 24 is withdrawn from engagement with therecess 21 of the sliding block B and the parts are free to be rotated.

As the seat-structure D is turned to effect reversal, the cam stud I9moving in the cam track I9 causes the plate C and the block B upon whichit rests to move laterally upon the base frame. When the plunger 24reaches the recess V2l on the opposite side of the sliding block, it

immediately drops into the recess and locks the partsY against furtherrotation. Meanwhile, the cam I9 has traversed the cam track in one ofthe two circles. If it is desired to continue the rotation of the seatin the same direction, the treadle member 34 may be operated to releasethe locking members, as hereinbefore described, and the rotation of theseat may be continued. During this operation, the cam stud passes aroundthe curved track of the other circle and nally reaches the point fromwhich it started. At this point, the plunger 24 drops into the recesswithin the block member C and the parts are again in their initialposition. If desired, the seat-structure maybe rotated in eitherdirection and the direction of the'rotation changed at any point. Theoppositely disposed bars 32 permit the locking members to bedisengagedat either side of the seat structure.

The foregoing detailed description has been given for clearness ofunderstanding only and no unnecessary limitations Vshould beV understoodtherefrom. but the appended claims should be` construed as broadly aspermissible in View of the prior art.

We claim:

1. In combination, a base, a block slidably mounted thereon, a seatplate equipped with a cam track and connected to said block by anannular connection extending about said cam track, and a cam studcarried by said base member adapted to engage said cam track. Y

2. In combination, a base member, a carriage slidably mounted thereon,and a platemember provided with an annular bearing connection to saidcarriage permitting rotation of said plate member, said base member andsaid plate member being provided with a cam stud and a cam track locatedwithin said annular connection.

3. In combination, a base, a block slidably mounted thereon, a seatplate pivotally carried b-y said block and equipped with a pair ofsubstantially circular cam tracks communicating on one side to form acontinuous track, and a cam stud secured to said base and adapted. toengage said track. Y

4. In combination, a base, a carriage slidably mounted on said base, aseat-plate pivotally secured to and carried b-y said carriage andprovided with a continuous cam track resembling in shape the ligure 8,and a cam stud secured to the base and adapted to engage said track.

5. In combination, a base, a block slidably i mounted thereon andequipped with anV annular bearing, a seat plate equipped with an annularbearing rctatively engaging saidblock bearing, said plate being providedalso with a cam track disposed within said bearing, and a cam studsecured to said base and adapted to engage Vsaid track. Y

6. In combination, a base member, a block slidably mounted thereon andequipped with an annular flange bearing, a seat plate equipped With anannular flange bearing rotatively engaging said block ilange, said platebeing also provided With a cam slot, and a cam stud secured to said baseand adapted to engage said slot.

7. A seat comprising, a base, a block slidably mounted thereon, aseat-plate pivoltally secured to said block, said seat-plate beingprovided with a pair of substantially annular cam tracks communicatingon one side, removable hard metal bearing inserts secured in said tracksadjacent the points of communication between said annular trackportions, and a cam stud carried by said base adapted to engage saidtracks.

8. A seat comprising, a base, a block slidably secured to said base, aseat-plate pivotally secured to and carried by said block, said platebeing provided with a curved cam track, a camstud carried by said baseand adapted to engage said track, and releasable locking means adaptedto secure said seat-plate to said block.

9. A seat comprising, a base, fa block slidably secured to said base, aseat plate pivotallyV secured to and carried by said block, said platebeing provided withl a curved cam track, a cam stud car- Aried by saidbase and adapted to engage 'said track, releasable locking means adaptedto secure said seat-plate tof said block, said means comprising a springpressed plunger adapted to engage recesses in said plate and block, andtreadle' actuated levers adapted to raise said plunger.

ERNEST J. BECK. CLARENCEV A. VAN DERVEER. KING KAR/PEN.'

